A.A类B.B类C.C类D.D类
单项选择题高温密封胶的烘烤下限是()
A.20min,158℃B.25min,148℃C.15min,158℃D.20min,148℃
单项选择题高温密封胶的烘烤上限是()
A.65min,185℃B.65min,180℃C.60min,175℃D.60min,180℃
单项选择题低温密封胶的烘烤下限是()
A.25min,135℃B.25min,130℃C.20min,135℃D.20min,125℃
单项选择题低温密封胶的烘烤上限是()
A.80min,140℃B.90min,140℃C.90min,145℃D.90min,150℃
单项选择题使用LASD修补贴片返工缺陷时,规定的最大用量是()
A.5块(300mm*150mm)B.5块(300mm*300mm)C.4块(300mm*150mm)D.4块(300mm*300mm)